HPI HELLFIRE CARBON FIBER SHOCK TOWER 4mm THICK CARBON FIBER CENTER SHOCK TOWER. REPLACES STOCK ALUMINUM SHOCK TOWER. THIS TOWER IS PRE-DRILLED TO ACCECPT A MUGEN MBX-5 WING MOUNT, ALLOWING THE USE OF A REAR WING. *** INCLUDED WITH ITEM *** 1 - CARBON FIBER SHOCK TOWER *** NOTE *** SINCE THIS SHOCK TOWER IS THICKER THAN A STOCK SHOCK TOWER A SMALL AMOUNT OF MATERIAL MAY NEED TO BE REMOVED FROM THE BULKHEADS IN ORDER FOR A PROPER FIT.